Clean Object by Values

function cleanObject(obj, valueToClean = [null]) {
    if (!isObject(obj)) { // isObject defined below
        throw new Error('"obj" argument must be of type "object"');
    }

    const cleanObj = {};
    let filter = valueToClean;

    for (let key in obj) {
        const objValue = obj[key];

        if (Array.isArray(valueToClean)) {
            filter = val => valueToClean.includes(val);
        } else if (typeof valueToClean !== 'function') {
            filter = val => val === valueToClean;
        }

        if (isObject(objValue)) {
            cleanObj[key] = cleanObject(objValue, filter);
        } else if (!filter(objValue)) {
            cleanObj[key] = objValue;
        }
    }
    return cleanObj;
}

function isObject(val){
  return (
    val != null && 
    typeof val === 'object' && 
    Array.isArray(val) === false
  );
}

const clean = cleanObject({ name: 'Manolo', email: null, tags: null });
// > { name: 'Manolo' }

const clean = cleanObject({ name: 'Manolo', email: null, tags: [] }, [null, []]);
// > { name: 'Manolo' }